Once in a while, by mistake, like if I hurt myself, I do curse. It is as another poster said, do as I say, not as I do
They know not to.
My two boys- 8 and 13, know curses. Unfortunately, even PG movies have the B word and the SH word...PG-13 are allowed to drop one F bomb.
I'm a teacher, and in class, have had to deal with children making the F word or the SH word when we are dealing with word families...and we get over it. (unless they were like one child who constantly spelled the word, after knowing it was a curse word). It's kinda funny when someone goes to write the word "shirt" and leave out the "r"....then I make them slow down, and re-read what they wrote....and they always then read it as they wrote it...and catch that they need that "r"
I have a 3 year old nephew whose parents admit that they say the "f" word or "sh" word or "jesus chr*st" in front on him. They laugh and brag about how he says it and even uses it in the right context, and how it is so cute! Of course I argue slightly (not my child, so I don't get involved really)....but they just laugh so I just say how he'll get in trouble if he's still like that in 2 years for Kindergarten...but then I just drop it as it really isn't any of my business